Closure operator



2 sheets-sheet 1 F. W. HALL. ET AL CLOSURE OPERATOR Filed Aug. 2, 1929 De@ w33.

F. W. HALL El' AL CLOSURE OPERATOR Bec., 5, EEB.

Patented Dec. V5, 1933 'Il1e"`pr esent invention relates't'o mechanical control apparatus for garage doors andj thel'ike and relate`s more specical'ly to'closure operator fer evenings@ eigene dom; r se invention. dpsistsfbriy .of 'electrilly' driven a'dapted to' open end 'close doors' connnuou'sly, and it includes an adjustable switch' featurewhich is suited Ato be tripped by vehicles any optimum range of weight. @ii .rot .exexee1e'-0urhveniion may. bepnlied .to a o f'galjage doors' hinged on `the sides which @en :bifwdly Whew .an @preach t0 'the garage, which beef concrete or' another' hard'sbstance, serves as a drive wa'y for the vehicle. 51. A switch, preferably of the mercury type, len- A closed in aspbstantially water proofI hosinghavluga depressibl'e' cover lid' is'sltuatedin the drivewayfat Jap'rciper instance from thegarage. The housngjiset below thei surface of the driveway gihf* its; @Ver 'lidgs .approximately flush with Way l1);' ir'dded with two small levees, oneon e errsidegotlie switch housing', so4 'that when an itoinoliiie wheelirolls upon" the cover lidoi th'e'housing and not broi'i'ght to vrest exactly 5"* thereupon the wheel will roll down one o r the tlierjof the f levees' and gradually rock into po'- sition gfexactlyupon' 'the'li'df s a wheel o' ft he driven' vehicle 'rolls iipon theflidv fthe la housing' and is broug'ht to' rstf thereupon it dey 6001s-, 35. Thus `as an automobile approahes the garage "m" with the 'Hoors closed 'and one of its 'wheelsis j brought oo rest upon the depressible switch the power'is' switched on and the rnecha'nism'opens the doo'rs. As soon as the doors are :opened to a iiuid the automobile remain upon the switch box'lid A an undue length of time 'the mechanism would simi-.1r @oriente .toppen and #lose the doors harnrle ss1y-, `'shutter fasliiou It'rnay', however, ,gli be' 's to pped at any time withthe' doors vin any desiredrpdsition either by morfine thelitomobile foi oi theswitch bei: or by manipulating a hand which is provided the interior ofthe garage, or if, the automobile is in kthelgarage with 55| the doors closed ,anotherhand switch in the 'garage may be thrown to cause the Acurrent to travel direct to the mechanism, i. e. to bypass the depressible 7switch`outside,,and thus effect the opening 'tlie' doors.

- As the control mechanism is always in gear l-f i cLosUnE OPERATOR ,Frank w. Hau and George c. Fairbaimrort .t

Arthur. rex., aanleg fone-third wrm Y Y Aprlicauonnusmtzf 1929 Serial NL'3s3ou it is to be perceived' that with thedoors'closed' and the electric current 'shut oi completely a' very effective lo'xzkingl' of the doo'rsf'i'sf accomplished. I t may be preferable to enclose one of the hand switches a' lock'box or'i'or that matter manother building so' that it' 'would be inaccessible? to unauthorized persons "and the necessity of otherwise' 'locking-I the doors would;y thereby be ob' These witliother novel features of the inven' tion `will be better 'understood from Athe 'following detailed description and the' accompanying draw'- ings showing a"preferrcd=v embodiment offtlie `in vention'inyvhich -f f! -2 Fig. fis' a. plan view of an approach and-'an' 75 entrance-toa 'garage showing the intention dia' "if grammaticallyfjf *f ig. 2 1S 'a wir'ingidiagram Of'the'electric'al syfw tem in conecti with'the'inventlon. "l Fig. v371s a view 'takenfbn tli'ej line of Fugro-omitting the vehicle-wired. 11 l, iss'. view takei'onihe undp-1 of Fig; l sh'wing'a fragmentaryrpoition-pfva'wehiclewlfieeljin elevation. ff -f- Fig 5" a view taken on the'lnef F196.' '4" 'Flgffis'a Viewv taken onE l Referring t'o the 'drawings a switch 1, 'pref ably of the enclosedmercury type; havinigffap-l propriate' lead' yivir'es' 9a' and" 9b, "fby means of adjustable eleats'la and fb upon an 'end or a ie'ver'z 'rsting"ri a fulcru'm sand-linked to a g nienrib'er 4 which is`rigdly secured to a. cover lidr` 5f 7 95 The.' cover'lidfiwhich isf preferablyfturned downat'theedges and'welded at the 'corners fits'loosely'o'i'rer a tray-like"leak proof baise 6; One end Vofthe lid 5 rests upon an end Wall 6a of the tray'which is set lo'tl'slyY in another tray 7, the side'flwalls of which are'fhighertha'l the end rests upon a helical sprmfgl and when( de: pressed is brought to rest lipo'n'fthat end wall andthe sidewalls 'of the tray'.

' It is to be understood that'the complete switch box` which comprisedpi. tlr'ielid-'v and tray 6 set withnihe'tray '7, is'madewaterproof *The connection'c'f'tlie onduit'6b to"t1rie trayf is properly packed and the cap screws v6c and vfl 'are provided witl'igaslets l"to `exclude water. Thus even thou'g'hthe entlreboxbe' submerged 1t is'eftively 'sealdr "The "'prin`g`-8.`is held in proper'positonby a', pin' 8u which issecuredat its base to the' tray 6. 'Ilie location f the'spring 8 may be changed withrelation tothe ends' of 'izlrn'rtray 6l or fit nia? e'jubstituted for a'.' s trng'eror a'jwea'ik'er springt. Either' shifting the 'spring orsubstitutiing one of different strength will eiiect a. change 

